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All the other 2020 models I've seen are 3-phase. I was skeptical at first, but the red/black/white/green conductors are confirmation that it is in fact single-phase supplied. There's no way in hell you'd get 15W from single phase, so that must be a &quot;warning sticker&quot; statistic. I'm fairly certain these are actually five watts. Anywhere from 50-100A power draw I'd imagine.

Since it is not mentioned in your description, and based on the starting price, can I assume this laser is not working?

Their response:

Thanks for your email.

You should assume that it is most likely in good working condition.
The power supply was calibrated by Spectra on 03/08 and the laser head are in excellent cosmetic condition.
Any way it can be returned within 10 days for a full refund except the return shipping cost.

We have two complete units and one additional laser head.

As Cyparagon mentioned it's hard to imagine 15W using single phase 220VAC but stranger things have happened. If it is working and is truly 15W, then their starting price is a hell of a deal but it'll climb quickly. I'd throw a bid in on it but I just picked up my baby argon today (soon to be ripped out of a Perkin Elmer DNA sequencer)

Standard outlet power in the US is 110VAC but the service entering the main panel is 220V single phase. To receive 3-phase power is a commercial order and is very expensive.

WOW I just realized that the BUY IT NOW is $2860.00. I was thinking that was the starting bid. Hmm RTFQ appears to applicable. Now I'm torn. Should I burn nearly $3000 on something that is not likely to be 15W?

There's no chance that this thing will run on single phase. It is a 3 phase supply and the fact that it has red, black, white and green conductors IS confirmation that it runs on 3 phase. You can &quot;create&quot; 3 phase power from a standard residential single phase feed by way of a rotary phase converter. In the past, I used a 5HP rotary phase converter to run a Coherent Purelight, which is a 2.5W whitelight. I could run it up to about 20amps of tube current before the 5HP rotary phase converter breaker would pop. I really needed either a 10 or 15HP converter. But it was enough to light it and run for a while.